Your siting with your friend in the lunchroom and she chokes on a piece of candy what is the best way to her ?
a) perform the heimlich maneuver ?
b) give her a dose of ipecac syrup ?
c) perform cardiopulmonary resuscitation ?

the plates spread at mid-ocean ridges (they are divergent plate boundaries) which allows magma to rise through the weakness between the plates. the magma then emerges as lava from the boundary and cools, creating a new crust.

c. the runner should sprint as fast as possible to the finish line.